Pre-activity Assignment and Assessment
Activity:
Cell Engineers and Cell Detectives
Post-activity Assessment
– Assessment
•
Ask “ detectives ” to guess the function of the mystery cell, and explain why.
• Ask “ engineers ” to respond.
• Encourage discussions and clear up any misconceptions
– Mini lecture
• Mesophyll cells (photosynthesis) vs. storage cells
– Both have (different types of) plastids
•
Goblet cells vs. neuronal cells
– Both have extensive ER/Golgi (one for secretion, one for making membrane)
– Clicker activities
•
Guess the functions of a series of cell types with specific organelle contents and structural features
Conclusions and Perspectives
– Linking micro (organelles and cell function) and marco (organism level)
– Inspire students to think about bigger questions
• How are cells different (differentiation)
• How does one cell (zygote) make different cell types following a spatial and temporal program (development)
•
How have all these cell types come into being (evolution)

What does a photosynthetic plant cell look like?
http://www.uri.edu/cels/bio/plant_an atomy/images/01.gif
https://faculty.unlv.edu/schulte/Anatomy/Leaves/PrivetLeaf.jpg
– Individual cells: high chloroplast content and other features
– Working together: difference between two major types of mesophyll cells

What do these cells do?
Avocado
Potato http://www.emc.maricopa.edu/faculty/farabee/biobk/amyloplast.jpg
http://nickrentlab.siu.edu/PLB400/Peterson_Images/
Persea_Lipid.jpg
– They also contain numerous plastids
• Same type of organelle as chloroplasts
– What do they do?

What does a goblet cell look like?
http://www.baileybio.com/plogger/images/anatomy___physiology/12.
_powerpoint_-_digestive_system/goblet_cell.jpg
http://www.bio.davidson.edu/people/kabernd/BerndCV/Lab/Ep ithelialInfoWeb/goblet cells .jpg
– High abundance of ER and Golgi
– A trans Golgi apparatus cisterna is converted to mucinogen granules every 3 to 4 minutes during active secretion

What do these cells do?
http://www.columbia.edu/itc/hs/medical/sbpm_histology_old/micrographs/15.jpg
http://cdn.head-fi.org/b/b0/200x200px-ZCb0c4ee5f_ChkNFH-neuron1.jpg
– High abundance of ER and Golgi
– What do they do?

Clicker Time!!

What do these cells do?
Fiber cell in Papyrus Stone cells in pears http://emp.byui.edu/wellerg/Cell Types and
Tissues Lab/Images/Fiber.jpg
http://emp.byui.edu/wellerg/Cell Types and
Tissues Lab/Images/Sclerids.jpg
Structural features:
Function: a) Decoration?
b) Support / protection?
c) Enlarging surface area?
d) Water preservation?
e) Other?

What do these cells do?
http://www.cas.muohio.edu/~meicenrd/anatomy/Ch
7_Protective/pcep.jpg
http://www.unimuenster.de/GeoPalaeontologie/Palaeo/Palbot/c ut1a.jpg
Structural features:
Function: a) Decoration?
b) Support / protection?
c) Enlarging surface area?
d) Water preservation?
e) Other?

What do these cells do?
http://upload.wikimedia.org/wikipedia/c ommons/7/75/Arabidopsis-epidermand-trichome.jpg
http://www.queensu.ca/biology/new s/sneddentrichome/trichome.gif
http://t1.gstatic.com/images?q=tbn:ANd9G cRrA2tze02y1uajzmDCObWYYXfhnL4Cu
FIe72KwKcEINNGW47wq
Structural features:
Function: a) Decoration?
b) Support / protection?
c) Enlarging surface area?
d) Water preservation?
e) Other?
http://www.namethatplant.net/Images/Ima gesTN/tn_mam/tn_mam_roughleafdog06
0310dz.jpg

What do these cells do?
http://botit.botany.wisc.edu/Resources/Botany/
Root/Grass Root Tip/root hair.jpg
http://www.bio.miami.edu/d ana/pix/roothairs.jpg
Structural features:
Function: a) Decoration?
b) Support / protection?
c) Enlarging surface area?
d) Water preservation?
e) Other?
http://www.amjbot.org/co ntent/90/6/823/F3.large.j
pg

What do these cells do?
http://lh5.ggpht.com/_wYv4UjyptOQ/TPMRfco0LpI/AAAA
AAAAAzA/uJMDI2XWDr0/image131_thumb.png?imgmax
=800 http://discoverysedge.mayo.edu/diabetesmetabolism/images/de10-4-diabetes-myofibril.jpg
Structural features:
Function: a) Decoration?
b) Support / protection?
c) Enlarging surface area?
d) Water preservation?
e) Other?

– Relationship between organelle content, cell structure and cellular functions